Inertization of mine tailing via cold consolidation in geopolymer matrix
| Autor: | Jenni Kiventerä, Isabella Lancellotti, Francesco Dal Poggetto, Mirja Illikainen, Michelina Catauro |
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| Přispěvatelé: | Šárka Nenadálová, Vlastimil Bílek, Zbyněk Keršner, Stanislav Seitl , Dr. Hana Šimonová, Lancellotti, Isabella, Kiventerä, Jenni, Catauro, Michelina, Poggetto, Francesco Dal, Illikainen, Mirja |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Consolidation (soil)
Mechanical Engineering Metallurgy 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Geopolymer Tailings Inertization 0201 civil engineering Cold consolidation Mechanics of Materials 021105 building & construction Environmental science General Materials Science Mechanics of Material Materials Science (all) Mine tailing |
| Popis: | The consolidation via geopolymerisation is a room temperature alkaline chemical reaction of condensation between SiO2 and AlO2 monomers. Such a matrix can retain a large number of cations to compensate for the Al+3 in place of Si+4 in the tetrahedra. Arsenic-rich mine tailings from a gold mining site were activated with NaOH solution and commercial Na-Silicate (Na2O/SiO2 = 3) to produce a no-hazardous final material. Granulated blast furnace slag and metakaolin were used as co-binders to optimize the formulations. Leaching test was used to evaluate the inertization capability of the matrix after curing times of 7 and 28 days. The leaching results show that increasing curing time there is a significant decrease of As leaching due to the better consolidation of the material. Leaching of Cu, V, Ba and Zn significantly decrease, while Ni and Cr remain almost constant and Sb slightly increases. |
| Databáze: | OpenAIRE |
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